User Registration & Membership <= 5.2.2 - Missing Authorization to Unauthenticated User Deletion via Stripe Handler

5.3
Authorization Bypass Through User-Controlled Key
CVE CVE-2026-11966
CVSS 5.3 (Medium)
Publicly Published June 26, 2026
Last Updated July 30, 2026
Researcher Daniel Púa - devploit

Description

The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.2.2. This makes it possible for unauthenticated attackers to delete users.

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Vulnerability Details for User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder

Software Type Plugin
Software Slug user-registration (view on wordpress.org)
Patched? Yes
Remediation Update to version 5.2.3, or a newer patched version
Affected Version
  • <= 5.2.2
Patched Version
  • 5.2.3

Recent vulnerabilities in User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder

# Title CVE ID CVSS Researchers Date
1 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder < 5.2.5 - Authenticated (Subscriber+) Insecure Direct Object Reference CVE-2026-79995 4.3 Sai Praneeth Koti August 28, 2026
2 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder < 5.2.6 - Authenticated (Custom Role+) Privilege Escalation CVE-2026-79996 6.3 Artus KG August 28, 2026
3 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder <= 5.2.6 - Missing Authorization CVE-2026-73995 4.3 Dm_TomHe August 14, 2026
4 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder <= 5.2.6 - Missing Authorization CVE-2026-73403 5.3 Ziming Zhang August 13, 2026
5 User Registration & Membership <= 5.2.5 - Missing Authorization to Unauthenticated Account Creation While Registration Disabled CVE-2026-16736 5.3 Nguyễn Đức Hòa July 27, 2026
6 User Registration & Membership <= 5.2.2 - Unauthenticated Privilege Escalation CVE-2026-11961 8.1 Khaled Alenazi (Nxploited) June 26, 2026
7 User Registration & Membership <= 5.2.0 - Missing Authorization to Unauthenticated Payment Bypass CVE-2026-1869 6.5 Supakiad S. (m3ez) June 25, 2026
8 User Registration & Membership <= 5.2.1 - Unauthenticated PayPal Bypass to Membership Activation CVE-2026-11964 5.3 Alessandro Greco aka Aleff, Giovanbattista Ianni (University of Calabria - UNICAL) June 22, 2026
9 User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder <= 5.2.2 - Missing Authorization CVE-2026-52701 5.3 nobody09 June 22, 2026
10 User Registration & Membership <= 5.2.1 - Authenticated (Subscriber+) Insecure Direct Object Reference to Membership Tier Modification CVE-2026-11963 4.3 Revanth Hari Narayana Matte June 22, 2026

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